09-19-2017 10:24 AM
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Checking the general specification for IdeaPad 300 (15'') Platform Speciﬁcations here, backlit keyboard features is not available to similar model types 80Q7 as the motherboard does not offer power connection for the keyboard backlit as shown from the hardware manual FRU keyboard list pages 78-81.
You can follow the keyboard guide here on page 40-41 of the hardware manual to physical check on your motherboard model as it may not likely be compatible with a backlighted keyboard making it not possible to upgrade.
Hope this helps answer your query.